Spray nozzle



o. w, KROMER SPRAY NOZZLE lled June l5, 1953 IN V EN TOR. @Wm www UnitedStates Patent O SPRAY NOZZLE Orlando W. Krorner, Minneapolis, Minn.Application June 15, 1953, Serial No. 361,643 12 Claims. (Cl. 299-121)My invention relates to spraying nozzles and has for its primaryobjective the provision of a nozzle which willthrow a substantiallyuniform spray in a fan shape pattern of fixed and unprecedented width.

A still further object of my invention is the provision of a spraynozzle which is more efficient than any single spray nozzle orcombination of spray nozzles heretofore produced, which cannot get outof adjustment, and which, by virtue of its having a single largeopening, cannot become clogged.

A still further object of my invention is the provision of a device ofthe class above described which is extremely light in weight, which hasa minimum of parts, and which is extremely inexpensive to produce.

A still further object of my invention is the provision of a spraynozzle which is rugged in construction and which will maintain itsaccuracy for a longer period of time.

The above and still further objects of my invention will become apparentfrom the following detailed specification, appended claims, and attacheddrawings.

Referring to the drawings, wherein like characters indicate like partsthroughout the several views:

Fig. 1 is a view in rear elevation of my novel sprayer in use;

Fig. 2 is an enlarged view in side elevation;

Fig. 3 is a View in rear elevation on the same scale as Fig. 2,'

Fig. 4 is a View partly in section and partly in end elevation as seenfrom the line 4 4 of Fig. 2; and

Fig. 5 is a fragmentary view in bottom elevation as seen from the line 55 of Fig. 3.

Referring with greater particularity to the drawings, the numeral 1indicates in its entirety a main body or head having therein an axialbore 2, to the rear end portion of which a iluid` conduit or pipe 3 isadapted to be received. The reduced forward end 4 of the bore 2 providesa forwardly opening jet-producing outlet. Body 1, as shown, ispreferably formed from brass, cast iron, or steel bar stock, and has aforwardly extended neck 5 at its upper portion. As shown particularly byFigs. 3 and 4, the neck 5 extends radially outwardly from the boreopening 4 and is of less than 180 degrees in circumferential extent. Fora purpose which will hereinafter become apparent, the neck 5 has arcuateconverging undersurfaces 6 which intersect the upper end portion of thebore 4 on opposite sides of and in spaced relation to a line drawnvertically therethrough.

A circular spreader or impact plate 7 is detachably secured to theforward surface 8 of the neck 5 by means of headed bolts 9, and isgenerally concentrically disposed with respect to the bore 4. Thespreader surface 10 of the spreader plate 7 is smooth and preferablypolished. Furthermore, this surface 10 is at right angles to the axis ofthe bore 4 whereby to produce a downwardly and laterally outwardlyopening spray passage 11, the upper extent of which is defined by thearcuate undersurfaces 6 of the neck 5, and hence said passage 11 has acircumice ferential extent greater than degrees but less than 360degrees.

In order that a spray of uniform density from end to end may be created,I provide a lip 12 which projects forwardly from the body 1 into thespray passage 11. As shown, the lip 12 has a surface 13 which slopesforwardly and downwardly from the undersurfaces 6 of the neck 5 towardthe spreader plate 7. In practice, I have found that most eicientresults are achieved by sloping of the surface 13 at a range of anglesfrom between 10 and 16 degrees, specifically at 13 degrees with respectto the plane of the adjacent surface 10 of the spreader plate 7. Asshown, the bore 4 opens through the surface 13, the surface 13terminating in a point 14 below the bore 4 and in closely spacedrelation to the spreader plate 7. The entire area of the surface 13above the bottom 15 of the bore 4 is in the same plane. However, thepointed lower end portion of said lip 12 below'the bore 4 issubstantially parallel to the surface 10 of the spreader plate 7, asindicated at 16. Note also that the undersurfaces 17 of the lip 12converge in straight lines defining a segment of less than 180 degrees.

In operation, fluid under pressure entering the main body 1 through thepipe 3 is exited in a jet through the bore 4. This jet of uid is forcedagainst the smooth surface 10 of the impact or spreader plate 7 withconsiderable force. The iluid tends to be spread uniformly in alldirections. However, the neck 5 and particularly the arcuateundersurfaces 6 create the upper limits of the fanshape spray pattern X,illustrated in Fig. 1. Note particularly, by reference to Figs. 2 and 5,that the upwardly and rearwardly sloping surface 13 of the lip 12creates a space between the lip 12 and the surface 10 of the spreaderplate 7 which increases in width progressively from the parallel surface16 thereof to the undersurfaces 6 of the neck 5. By this means, theleast amount of the spray-producing uid, entering the head 1 from theconduit 3, is allowed to pass between the closely spaced substantiallyparallel surfaces 10 and 16 to the area of the ground immediatelythereblow; and an increasingly greater amount of fluid is utilized asthe lateral distance from the head 1 increases on opposite sides. Notethat the outermost limits of the spray X, identified by the numeral 18in Fig. 1, is formed by the widest area between the surfaces 10 and 13,namely the juncture of the surface 13 with the undersurface 6. Notealso, as shown in Fig. 2, that the arcuate undersurfaces 6 likewiseextend angularly upwardly in the direction of the spreader plate 7 forincreased eilciency.

My invention has been thoroughly tested and found to be completelysatisfactory for the accomplishment of the above objects, and while Ihave disclosed a preferred embodiment thereof, I wish it to beunderstood that same is capable of modification without departure fromthe scope of the appended claims.

What I claim is:

1. A spray nozzle comprising a main body having a longitudinallyextended jet producing bore therethrough, a spreader plate carried byone end of said body, spacer means overlying said bore spacing saidspreader plate from said one end of said body and substantially normalto said bore, said spacer means being of less than 180 degrees incircumferential extent and having converging undersurfaces whichintersect said bore; said body, spacer means and spreader plate definingan outwardly opening passage of more than 180 degrees of circumferentialextent underlying said bore, a lip on said body intermediate saidspreader plate and said one end of the body, said lip having a iiatforward surface sloping outwardly from the spacer means toward thespreader plate and terminating below the bore in closely spaced relationto said spreader plate, with said bore opening through said lip.

2. The structure defined in Vclaim l in which the spreader plate isprovided with a smooth flat surface and in which said lip underlyingsaid bore is provided with a flat surface portionrwhich is substantiallyparallel'to ythe smooth surface of said spreader plate.

' 3. The structure dened in claim l in which the for-` ward surface ofsaid lip lies'at an angle of from 10 to 16 degrees from the adjacentVsurface of the spreader plate.

4. The structure dened in claim 1 in which the undersurfaces of saidspacer means are arcuate and intersect said bore on opposite sides andin spaced relation to the vertical diameter of the bore.

5. The structure defined*v in claim 4 in which the spreader plate isprovided with a smooth flat surface and Yin which said lip underlyingsaid bore is provided with a at surfaceportion which isV substantiallyparallel to the smooth surface of said spreader plate.

6. The structure defined in claim 5 in which said lip is provided withunder-surfaces which converge in straight lines detning a segment ofless than 180 degrees.

7. A spray nozzle comprising a main body having a longitudinallyextended jet-producing bore therethrough,

a spreader plate carried by one end of said body at right angles toVsaid bore,ra spacer means axially spacing said spreader plate from themain body, said spacer means having spray pattern limiting surfacesintersecting said bore; said body, spacer means and spreader platedelining a radially outwardly opening segmental spray passage, a lipdened by said body, said lip being disposed within said spray passageand extending Vfrom said bore generally radially outwardly, said liphaving a iiat forward surface which slopes axially toward` the spreaderplate and terminates at its lower end portion adjacentV the bore inclosely spaced relation to said spreader plate.

8. A spray nozzle comprising a mainA body element having alongitudinally extended jet-producing bore therethrough, a'detachablespreader plate element carried by said body element at right angles tosaid bore, a spacer means overlying said bore spacing saidspreaderrplate element axially from said body element, said spacer meansbeing of less than one-half of the peripheral extent of said bodyelement and having converging undersurfaces which intersect theprojected,cross-sectional area of said bore; said body element, spacermeans and spreader plate element defining an outwardly opening spraypassage of more than 180 degrees in circumferential extent underlyingsaid elements is provided with a smooth flat surface and in which thesurface of sad'lip facing said flat surface lies at an angle offromwlO'degrees to 16 degrees with respect thereto. Y

10. The structure dened yin claim 8 in which one of said elements isprovided with a smooth at surface and in which said lip underlying saidbore is provided with an angular surface portion which is substantiallyparallel to the smooth surface of the other of said elements;

ll. The structure defined in claim 10 in which said lip is provided withundersurfaces which converge to detine a segment of less than'flfSOdegrees.

l2. A spray nozzle comprising a main`l5ody'element having alongitudinally extended jet producing bore therethrough, a spreaderplate element carried by saidV body element, spacer means overlying saidbore spacing said spreader plate element axially from said body yelementin intersecting relation to a projection of said bore, said spacer meanshaving Yconverging undersurfaces which intersect a projection of saidbore;V V.said body element,` spacer means and spreader plate elementdening a seg-lY mental spray passage, a lip on one of said elements,said lip having a at surface extending from the spacer means'ff axiallytoward the other of said elements and terminating beyond a projection ofsaid bore in closely spaced relation to the other of said elements.

References Cited in the file of this patent UNITED STATES PATENTSWilkins, 1an. 4, 1944!

